Upgrade rest of master.chromium.memory bots to Precise.
Upgrade rest of master.chromium.memory bots to Precise.

Somehow they were still on Lucid.

BUG=225589, 176503, 174861, 170262
R=xusydoc@chromium.org

Review URL: https://codereview.chromium.org/15752004

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@202460 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build